呼和浩特市再生水水质动态及滴灌堵塞效应分析
发布时间：2019-07-04 20:37
【摘要】：为研究再生水在储存、调蓄过程中的水质变化,保证再生水的安全高效利用,本文以呼和浩特市内蒙古师范大学生活污水处理厂出水为研究对象,以自来水为对照,利用室内理化分析试验,分别研究了不同季节三种材质储水器中存放22天的再生水的水质动态及其相关性的变化；利用室外滴灌试验测定了在三种储水器中储存一段时间后再生水的滴灌灌水器堵塞效应。结果表明：(1)在不同材质的储水器中存放时,再生水和自来水的水质变化规律不同,产生的藻类和微生物的形貌、种类和数量不同。特别是在夏季,塑料桶中会产生大量的藻类,桶内呈绿色。同一储存条件下再生水的温度高于自来水的温度。(2)塑料桶中有藻类大量繁殖,总磷下降明显,化学需氧量(CODcr)较高,波动较大。塑料桶能吸附水中的Ca2+、Mg2+等金属离子,在桶壁沉积,形成一层水垢,导致水中硬度明显的下降。塑料桶有利于水中总磷和硬度的减小。氨氮在不同储水器中的变化差异不大,在储存过程中有增大的趋势,但是变化不明显。水泥池中CODcr值最小,CODcr变化最小,水泥池有利于CODcr的降低。(3)夏季自来水和再生水的初始水质对水温、CODcr、总磷有极显著的影响,储存条件对再生水和自来水的CODcr、硬度和总磷有极显著的影响,储存条件对水温有显著的影响；在冬季初始水质对CODcr、总磷、氨氮和硬度有极显著的影响,对水温有显著的影响,储存条件对水温有极显著的影响。(4)再生水水质的变化过程可以描述为：在适宜的温度和光照条件下,再生水中微生物和藻类代谢旺盛,微生物分解有机物,造成CODcr的下降；藻类利用再生水中丰富的N、P、K等大量繁殖,导致水中总磷含量的降低,CODcr开始升高；温度升高时,CaCO3、MgCO3在水中的溶解度降低,从水中析出,附着到桶壁或池底,导致水中硬度的减小。夏季温度较冬季高,水质的变化幅度较冬季大。(5)受季节和储水器类型的影响,水质指标间的相关性不同,冬季总磷和硬度、温度、CODcr、氨氮有较强的相关性,硬度与CODcr、氨氮有较强的相关性,硬度与温度有一定相关性,CODcr与氨氮有较强的相关性。夏季总磷和硬度、CODcr有较强相关性,温度与CODcr有一定的相关性。在塑料桶中,总磷与温度有一定相关性,总磷与CODcr有较强相关性；而在铁皮桶中,总磷与硬度有较强的相关性,总磷与温度、COD有一定的相关性。在水泥池中,温度与总磷、CODcr有一定的相关性,总磷与CODcr有较强的相关性。(6)三种储存条件下的再生水用于滴灌时,对灌水器的堵塞效应不同。塑料桶储水器中的再生水用于滴灌时,最容易导致灌水器的堵塞,在经过31次灌水后,两种滴灌管的平均流量分别降低了30%和75%。而水泥池中再生水造成滴灌堵塞最轻微,铁皮桶次之。滴灌灌水器堵塞时,会被冲开,使流量出现回升。大流量的圆柱型滴灌管的抗堵塞能力比小流量的贴片式滴灌带强。总之,再生水在储存过程中各水质指标及其相关性会受到储存条件的影响,存在明显的季节差异,夏季水质变化较大。塑料桶虽然对总磷和硬度的减小有一定作用,但是由于其中藻类的繁殖导致水质恶化,用于滴灌时容易对滴灌系统造成堵塞。水泥池是较为理想的再生水储水器。
文内图片：
图片说明：贴片式滴管带灌水器流道结构
[Abstract]:In order to study the change of the water quality in the storage and storage of the reclaimed water and to ensure the safe and efficient utilization of the reclaimed water, the water from the domestic sewage treatment plant of the Inner Mongolia Normal University of Hohhot City is the research object, the water is used as the control, and the indoor physical and chemical analysis test is used. In this paper, the water quality and the correlation of the water quality of the reclaimed water stored for 22 days in three kinds of water storage tanks of different seasons were studied, and the blocking effect of the drip irrigation emitter after a period of storage for some time in the three water storage tanks was determined by the outdoor drip irrigation test. The results show that: (1) In the storage of different materials, the water quality of the reclaimed water and tap water is different, and the appearance, species and quantity of the algae and the micro-organisms are different. In particular in the summer, a large amount of algae is generated in the plastic barrel, and the barrel is green. The temperature of the regenerated water at the same storage condition is higher than the temperature of the tap water. (2) There is a large number of propagation of algae in the plastic bucket, the total phosphorus is obviously lower, and the chemical oxygen demand (CODcr) is higher and the fluctuation is large. The plastic bucket can absorb the metal ions such as Ca2 + and Mg2 + in the water, and deposit on the wall of the barrel to form a layer of scale, resulting in a significant decrease in the hardness of the water. The plastic bucket is beneficial to the reduction of total phosphorus and hardness in water. The difference of ammonia nitrogen in different water storage devices is not large, and there is a tendency to increase in the storage process, but the change is not obvious. The CODcr value in the cement pool is the smallest, the change of CODcr is the minimum, and the cement pool is beneficial to the reduction of CODcr. and (3) the initial water quality of the tap water and the reclaimed water in summer has a remarkable effect on the water temperature, the CODcr and the total phosphorus, the storage condition has a remarkable effect on the CODcr, the hardness and the total phosphorus of the reclaimed water and the tap water, and the storage condition has a remarkable effect on the water temperature; and in the winter, the initial water quality is good for CODcr, total phosphorus, The effect of ammonia nitrogen and hardness on the water temperature is very significant, and the storage condition has a very significant effect on the water temperature. (4) the process of changing the water quality of the reclaimed water can be described as follows: under the condition of proper temperature and light, the microorganisms in the reclaimed water and the algae are strong in metabolism, and the microorganisms decompose the organic matters, so that the CODcr is reduced; and the algae are propagated through a large number of N, P, K and the like in the reclaimed water, And when the temperature is increased, the solubility of the CaCO3 and the MgCO3 in the water is reduced, and the water is precipitated from the water and is attached to the wall of the barrel or the bottom of the tank, so that the hardness in the water is reduced. The temperature in summer is higher than that in winter, and the change of water quality is greater than that in winter. (5) The correlation between water quality indexes, total phosphorus and hardness, temperature, CODcr and ammonia nitrogen in winter is very strong, and the hardness and CODcr and ammonia nitrogen have a strong correlation. The hardness and the temperature have a certain correlation, and the CODcr has a strong correlation with the ammonia nitrogen. There is a strong correlation between the total phosphorus and the hardness and the CODcr in the summer, and the temperature and the CODcr have a certain correlation. In the plastic bucket, the total phosphorus has a certain correlation with the temperature, and the total phosphorus has a strong correlation with the CODcr. In the iron sheet, the total phosphorus and the hardness have a strong correlation, and the total phosphorus has a certain correlation with the temperature and the COD. In the cement pool, there is a certain correlation between the temperature and total phosphorus and CODcr, and the total phosphorus has a strong correlation with CODcr. (6) When the reclaimed water under the three storage conditions is used for drip irrigation, the blocking effect on the emitter is different. When the reclaimed water in the water reservoir of the plastic bucket is used for drip irrigation, it is most likely to result in the blockage of the emitter, and the average flow rate of the two drip irrigation pipes is reduced by 30% and 75% after the 31 times of irrigation. And the reclaimed water in the cement pool causes the drip irrigation to be blocked to be the most slight, and the iron sheet barrel is the second. When the drip irrigation emitter is blocked, the drip irrigation emitter will be flushed and the flow will pick up. The anti-blocking capacity of the large-flow cylindrical drip-irrigation pipe is stronger than that of the small-flow-type patch-type drip irrigation pipe. In conclusion, the water quality indexes and their correlation in the storage process can be affected by the storage conditions, there are obvious seasonal differences, and the water quality in the summer is large. The plastic bucket has a certain effect on the reduction of total phosphorus and hardness, but because of the propagation of the algae, the water quality is deteriorated, and the plastic bucket is easy to block the drip irrigation system when used for drip irrigation. The cement pool is an ideal regenerated water reservoir.
【学位授予单位】：内蒙古师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
本文编号：2510215
文内图片：
图片说明：贴片式滴管带灌水器流道结构
[Abstract]:In order to study the change of the water quality in the storage and storage of the reclaimed water and to ensure the safe and efficient utilization of the reclaimed water, the water from the domestic sewage treatment plant of the Inner Mongolia Normal University of Hohhot City is the research object, the water is used as the control, and the indoor physical and chemical analysis test is used. In this paper, the water quality and the correlation of the water quality of the reclaimed water stored for 22 days in three kinds of water storage tanks of different seasons were studied, and the blocking effect of the drip irrigation emitter after a period of storage for some time in the three water storage tanks was determined by the outdoor drip irrigation test. The results show that: (1) In the storage of different materials, the water quality of the reclaimed water and tap water is different, and the appearance, species and quantity of the algae and the micro-organisms are different. In particular in the summer, a large amount of algae is generated in the plastic barrel, and the barrel is green. The temperature of the regenerated water at the same storage condition is higher than the temperature of the tap water. (2) There is a large number of propagation of algae in the plastic bucket, the total phosphorus is obviously lower, and the chemical oxygen demand (CODcr) is higher and the fluctuation is large. The plastic bucket can absorb the metal ions such as Ca2 + and Mg2 + in the water, and deposit on the wall of the barrel to form a layer of scale, resulting in a significant decrease in the hardness of the water. The plastic bucket is beneficial to the reduction of total phosphorus and hardness in water. The difference of ammonia nitrogen in different water storage devices is not large, and there is a tendency to increase in the storage process, but the change is not obvious. The CODcr value in the cement pool is the smallest, the change of CODcr is the minimum, and the cement pool is beneficial to the reduction of CODcr. and (3) the initial water quality of the tap water and the reclaimed water in summer has a remarkable effect on the water temperature, the CODcr and the total phosphorus, the storage condition has a remarkable effect on the CODcr, the hardness and the total phosphorus of the reclaimed water and the tap water, and the storage condition has a remarkable effect on the water temperature; and in the winter, the initial water quality is good for CODcr, total phosphorus, The effect of ammonia nitrogen and hardness on the water temperature is very significant, and the storage condition has a very significant effect on the water temperature. (4) the process of changing the water quality of the reclaimed water can be described as follows: under the condition of proper temperature and light, the microorganisms in the reclaimed water and the algae are strong in metabolism, and the microorganisms decompose the organic matters, so that the CODcr is reduced; and the algae are propagated through a large number of N, P, K and the like in the reclaimed water, And when the temperature is increased, the solubility of the CaCO3 and the MgCO3 in the water is reduced, and the water is precipitated from the water and is attached to the wall of the barrel or the bottom of the tank, so that the hardness in the water is reduced. The temperature in summer is higher than that in winter, and the change of water quality is greater than that in winter. (5) The correlation between water quality indexes, total phosphorus and hardness, temperature, CODcr and ammonia nitrogen in winter is very strong, and the hardness and CODcr and ammonia nitrogen have a strong correlation. The hardness and the temperature have a certain correlation, and the CODcr has a strong correlation with the ammonia nitrogen. There is a strong correlation between the total phosphorus and the hardness and the CODcr in the summer, and the temperature and the CODcr have a certain correlation. In the plastic bucket, the total phosphorus has a certain correlation with the temperature, and the total phosphorus has a strong correlation with the CODcr. In the iron sheet, the total phosphorus and the hardness have a strong correlation, and the total phosphorus has a certain correlation with the temperature and the COD. In the cement pool, there is a certain correlation between the temperature and total phosphorus and CODcr, and the total phosphorus has a strong correlation with CODcr. (6) When the reclaimed water under the three storage conditions is used for drip irrigation, the blocking effect on the emitter is different. When the reclaimed water in the water reservoir of the plastic bucket is used for drip irrigation, it is most likely to result in the blockage of the emitter, and the average flow rate of the two drip irrigation pipes is reduced by 30% and 75% after the 31 times of irrigation. And the reclaimed water in the cement pool causes the drip irrigation to be blocked to be the most slight, and the iron sheet barrel is the second. When the drip irrigation emitter is blocked, the drip irrigation emitter will be flushed and the flow will pick up. The anti-blocking capacity of the large-flow cylindrical drip-irrigation pipe is stronger than that of the small-flow-type patch-type drip irrigation pipe. In conclusion, the water quality indexes and their correlation in the storage process can be affected by the storage conditions, there are obvious seasonal differences, and the water quality in the summer is large. The plastic bucket has a certain effect on the reduction of total phosphorus and hardness, but because of the propagation of the algae, the water quality is deteriorated, and the plastic bucket is easy to block the drip irrigation system when used for drip irrigation. The cement pool is an ideal regenerated water reservoir.
【学位授予单位】：内蒙古师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
【共引文献】
相关期刊论文 前1条
1 冯俊生;林琦;顾娇娇;陆志杰;;Fenton-UASB-BAC处理高浓度聚醚废水[J];常州大学学报(自然科学版);2014年04期
，本文编号：2510215
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