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Aiming at the status that the pollution of wastewater from livestock and poultry raising is going from bad to worse in China, some treatment technologies such as irrigation to farmland, natural treatment and industrialized treatment were reviewed. Considering the practical situation in China, it was suggested to currently prioritize irrigation to farmland and natural treatment. To establish databases...
Experiments of of the biological filter by falling water aeration show that the removal rate of CODcr is 66.9%, of NH3-N is 64.5%, of TP is 48%.The ideal effect can be obtained if the water is 100% circulation processing. Combination process around the core that is biological filter by falling water aeration should be good for mountain town water pollution control by this paper.
The anoxic-aerobic biological aerated filter (BAF) was used to treat the domestic sewage reused from a power plant with its characteristics. The paper introduced the whole process, the relevant processing unit and major equipment, and analysis the actual effect by the BAF treatment. The results showed that, the every water quality of the actual effluent had reached the national “domestic wastewater...
It was investigated and discussed of an engineering case about process and operation of hotel sewage treatment system in this paper. It can be used for reference to other wastewater treatment and reuse.
This paper researched on the simulated flotation wastewater treatment technology. Experiments were performed by the operating manner of Anaerobic-BAC. Compared with natural photo degradation, the treatment effect of Anaerobic-BAC was obvious. The experimental results show that the biodegradability was greatly improved, the B/C could be increased from 0.09∼0.19 to 0.17∼0.37. Under this experimental...
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...
The technological parameters and running effect in the treatment of municipal sewage by an A2/O + Advanced treatment process are introduced and also aims to improve the application of the BIOLAK process in municipal wastewater treatment. The process flow, process parameters and structure size of the project were introduced. And the treatment effect and designing features were discussed. The running...
In recent years, the research of nitrogen and phosphorus removal in sewage has been a hotspot in the field of wastewater treatment at home and abroad with the worsening of the world-wide eutrophication of water bodies. Improved A2/O oxidation ditch of Wulongkou sewage treatment plant in Zhengzhou has achieved good effect to remove organic matter, nitrogen and phosphorus in sewage. Based on the operation...
In this work, the advanced treatment of the biologically treated wastewater of a textile plant using combination of ozonation and two-stage biological aerated filter (BAF) was studied. Comparing different ozone dosing methods, it was found that the integrated device including ozonation and BAF, allowed a higher COD (chemical oxygen demand) and color reduction. Comparing different treatment processes,...
When wastewater is collected and deliver to sewage treatment plant in sewer network, there are occurring complicate process about physical, chemical and biological. It has great impact to organic removal and transformation efficiency where happened during the later treatment process in sewage treatment plant. This essay will describe water quality change in sewer pipe and the technology by using sewer...
Considerable wastewater from corn starch processing contains lots of organic matter, which is difficulty to treat and causes serious pollution. As the starch processing industry continues to expand, more and more concern focuses on water pollution. In this study, when membrane Biological Reactor treats wastewater from corn starch processing, the influent volume 3 loads up to 20 ~ 50kg COD/(m3 day),...
In this study, we have investigated the effect of pollutants removal of a vertical multilevel soil infiltration (VMSI) system on municipal wastewater treatment. The VMSI was of 30cm*20cm*50cm column, in which combined stuffing consisted of soil, quartz sand, active carbon and scrap irons were packed. As a result, VMSI system exhibited excellent removal efficiency with 91.7% of COD, 98.4% of NH4+--N,...
Two different leachates of Chang'an landfill in Chendu were collected as the object of study. The components of organic pollutants in leachates were detected by combined GC-MS technique based on the general water quality analysis. Test results of study are as the follows: the type and nature of organic pollutant effect directly on leachate biodegradability. In high biodegradability (BOD5/CODCr = 0...
The research was on the effect of the removal of COD, growth rate of VFA, and biodegradability of hard-biodegradable chemical industrial wastewater with high salinity caused by the device operating parameters of the three different hydrolysis acidification reactors. The results showed that the differences of biodegradability increase rate and COD removal was slight among the three different reactors...
A combined process of aeration iron-carbon microelectrolysis(AICM)-hydrolysis acidification-anaerobic-aerobic was studied to treat pharmaceutical wastewater characterized by high nitrogen and refractory organic concentration. Results showed that when the AICM filter was controlled at the conditions of pH 3, iron-carbon ratio 1, gas-water ratio 10 and HRT 2h, the HRT of two-stage hydrolysis acidification,...
In order to tackle the problem for remove ammonia from polluted water, clinoptilolite is used for adsorbing the ammonia from wastewater, and biochemical regeneration for ammonia removal was investigated. The results showed that the data were fit to Langmuir isotherms for ammonium ion uptake onto clinoptilolite. For biochemical regeneration experiment, it was stable for the removal of NH3-N by clinoptilolite...
The ozonizing-biological aerated filter (BAF) process was used to treat the port chemical cabin washing wastewater . According to the characteristics of port chemical cabin washing wastewater with high CODcr, variable quality and complicated composition, the initial pH, the dosage of ozone and catalyzer, the bio-degrade ability of the wastewater, and effect of the hydraulic retention time (HRT) of...
A pilot-scale study was conducted to investigate the principal influencing factors on nitrogen removal performance of combined biological aerated filter (CBAF), including external carbon source dosage, ratio of air to water and hydraulic loading rate, with inflow of secondary effluent form a municipal WWTP in Shenzhen city. Moreover, the optimal operation mode of CBAF was determined as follows: with...
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