High-ammonia-nitrogen and high-hardness waste water pretreatment device, treatment system and treatment method
A pretreatment device and high hardness technology, applied in water/sewage treatment, degassed water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problem of low total hardness removal effect of wastewater, and achieve total hardness removal efficiency High, the effect of reducing the effect of fouling
Pending Publication Date: 2019-08-02
CHINA SHENHUA ENERGY CO LTD +2
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[0008] The main purpose of the present invention is to provide a high ammonia nitrogen high hardness wastewater pretreatment device, treatment system and treatment method to solve the problem of low total hardness removal effect in the treated wastewater in the prior art
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[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below in conjunction with examples.
[0038] As mentioned in the background technology, the treatment method of high ammonia nitrogen and high hardness wastewater in the prior art has a low effect on the removal of total hardness, and has a greater impact on subsequent biochemical treatment and scaling of underwater equipment. In order to improve this situation, in In a typical implementation of the present application, a high ammonia nitrogen high hardness wastewater pretreatment device is provided, such as figure 1As shown, the pretreatment device comprises: a buffer blowing tank 10, an aeration device 20 and a coagulation tank 30, the buffer blowing tank 10 has an alkaline conditioner inlet, a waste water inlet 11 and a buffer blowing tank outlet 12; The ...
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The invention provides a high-ammonia-nitrogen and high-hardness waste water pretreatment device, a treatment system and a treatment method. The pretreatment device comprises a buffer blowoff pool, aeration equipment and a coagulation pool; the buffer blowoff pool is provided with an alkaline regulator inlet, a waste water inlet and a buffer blowoff pool water outlet; the aeration equipment is arranged at the bottom of the buffer blowoff pool; the coagulation pool comprises a coagulant inlet, a coagulation pool water inlet and a coagulation pool water outlet; the buffer blowoff pool water outlet is communicated with the coagulation pool water inlet. The aeration equipment is arranged at the bottom of the buffer blowoff pool, the alkaline regulator added from the alkaline regulator inlet and high-annomia-nitrogen and high-hardness waste water are subjected to completely mixed reaction, part of calcium and magnesium ions in the waste water can be converted into precipitate by the alkaline regulator to be removed, and ammonia nitrogen can be removed preliminarily, so that the efficiency of removing the total hardness by the device is high, and the influence on the subsequent biochemical treatment and underwater equipment scaling is greatly reduced.
Description
technical field [0001] The invention relates to the technical field of environmental protection, in particular to a pretreatment device, a treatment system and a treatment method for high ammonia nitrogen and high hardness wastewater. Background technique [0002] The coal chemical gasification unit discharges a large amount of production wastewater during the production process. Among them, the indicators of the wastewater are as follows: total hardness 900-1200mg / L, ammonia nitrogen 300-400mg / L, COD 600-1100mg / L, turbidity 45-78NTU, Alkalinity 15-21mmol / L, pH 8.2-8.6. These chemical wastewater have the following characteristics: high hardness, high ammonia nitrogen, large amount of wastewater and difficult treatment (so this type of wastewater is also called high ammonia nitrogen high hardness wastewater), which has a great impact on subsequent biochemical treatment and underwater equipment scaling. [0003] The most commonly used processing method at present is the lime ...
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CPCC02F1/20C02F1/5236C02F1/56C02F1/66C02F5/02C02F7/00C02F9/00C02F2001/007
Inventor 张红旗高小龙张永胜娄成杰周新宇张杰薛爱娣马衍睿
Owner CHINA SHENHUA ENERGY CO LTD