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The water of Wu Jia-dui Wetland park in Kunming come from the park dike outside Da-Guan river inferior V river water and the wastewater of more than 1200 persons in Wu Jiadui village. The water quantity for the 10000 m3/d,During the period of adopting Wetland engineering to manage, circulate a management, developped the biologic food chain of the integrity in the water body, Make the water quality...
As a major part of the Dianchi Lake, the Caohai Lake is in a serious eutrophication situation, which is imminent for pollution treatment. An improved floating bed, which called combined packing with emergent aquatic plants canna indica, submerged aquatic plants Hydrilla verticillata and aeration device, was used to purify the water taken from the Caohai Lake. Compared with the traditional floating...
Abundant of estrogens is excreted via human urine, bringing the risk of micro-pollution during nutrients recovery from urine. This study investigated the characteristics of estrogens during the ammonification of urine, and then experiments were conducted to study the adsorption of estrogens on struvite, a potential product to recover nutrients from urine. The results showed that no 17a ethinylestradiol...
Due to the enormous amount of fly ash and its pollution to environment, fly ash was investigated for preparation of coagulant. By measuring the Al3+ and Fe3+ solubility rate by changing the dosage of Na2CO3, it was concluded that the best ratio of Na2CO3 and fly ash was 0.8. At the condition of the best ratio, 805 and 1.5 h were recognized the best reaction temperature and reaction time. On the basis...
The tidal-flow constructed wetland is a new type of constructed wetland proposed by the University of Birmingham, U.K. The principal of the wetland takes advantage of the rhythmical movement of wastewater and air which accelerates the alternation of aerobic and anaerobic to realize and enhance pollutant removal. This study focused on two aspects, the different operation performances for treating pollutants...
Coagulation-Sedimentation process is to be used for advanced treatment of the effluent after secondary biological treatment of some petrochemical fiber company. By the study of jar tests, operating factors for petrochemical wastewater have been found out, including the optimum coagulant type, the best dosage and the best operating conditions. Mechanism of removing phosphorus was analyzed. The results...
Our country requests that medical polluted water should be discharged only after treatment, the detection in the effects of the polluted water disinfection and whether the second pollution will be produced is judged by detecting the content of the residential chlorine in the wasted water after treatment. The complicated components in the polluted water give difficulties in real time detection. This...
Utilizing formats such as Geographic Information Systems (GIS) and Remote Sensing data assessment, an attempt was made to identify possible releasers of effluent waste into the major coastal watershed regions pertaining to ongoing research conducted within monitored mussel watch sites. The categorization of possible contaminating locations was made available through the development of a series of...
Denitrifying phosphorus removal is a kind of new efficient technology, and can alleviate the contradictions of urban sewage with low-carbon sources. This research took wastewater from a sewage treatment plant in Beijing as study object. Results showed that there was obvious phenomenon of denitrifying phosphorus removal and this phenomenon was gradually strengthened in A2/O process.
Washing coal usually brings about 0.2m3/t wastewater (in terms of closed circulation) due to transpiration, which provides an effective space for the recycle of coke-plant wastewater. The effluent from phenol-cyanogen wastewater biochemical disposal station is used as complementary water for washing coal, and Closed-Cycling System in coal preparation plant is introduced to make industrial experiment...
In order to improve the quality of the river water, raise constructed rapid infiltration(CRI) system was constructed. Practice shows that the location and layout of this ecological engineering conform to the source of pollution, and the system is a new technology which combines natural, social and economic systems in one. In effluent of CRI, the removal rates of CODcr, NH3-N, TN, BOD5, SS and TP are...
Cement-soil samples were made from composite cement (25%), red clay (75%) and proper amount of ultra-pure water. The samples were used to treat sewage water in the experiment of anaerobic reaction and aerobic reaction respectively. The raw sewage was collected from the inflow path of a wastewater treatment plan and it mainly consisted of domestic sewage. Results showed that the effect of ion exchange...
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