Ammonia nitrogen removal process for carbonized sludge press filtrate
A technology of carbonizing sludge and filtrate, which is applied in the field of ammonia nitrogen removal process, can solve the problems of consuming corporate profits, abnormal operation of enterprises, high investment and operating costs, etc., so as to improve the treatment effect, shorten the time and ensure the treatment effect Effect
Inactive Publication Date: 2020-08-14
JIANGSU HAIRONG THERMAL ANDENVIRONMENTAL ENG CO LTD
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Problems solved by technology
However, these processes generally use sewage as a carrier for treatment, requiring a large number of large-scale equipment for production, and the state of high investment and operating costs makes the sewage treatment costs of enterprises greatly consume the profits of enterprises, and some enterprises cannot even operate normally. run
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[0030] refer to figure 1 , a process for removing ammonia and nitrogen from carbonized sludge press filtrate, comprising the steps of:
[0031] (10) Send the press-filtrate produced after the carbonized sludge press-filters to the heater 14 with the sewage lifting pump 12 for heating, and heat it to 40°C. The heater 14 adopts a hybrid heater with a mixing and stirring function.
[0032] The amount of ammonia nitrogen calculated as N in the press-filtrate is 1000-1100 mg / L, and the pH value of the press-filtrate is controlled between 9.5-10.2. According to different requirements, in other embodiments, the pH value of the filter press liquid can also be controlled between 10.3-11, of course, it can be controlled between 9.8-10.5.
[0033] In order to ensure the removal efficiency of ammonia, in other embodiments, the amount of ammonia nitrogen in the filter press liquid can also be 900-1000 mg / L or 1100-1200 mg / L.
[0034] It can be understood that, depending on the ammonia c...
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The invention discloses an ammonia nitrogen removal process for carbonized sludge press filtrate. The ammonia nitrogen removal process comprises the following steps: (10) heating the press filtrate; (20) feeding the heated press filtrate into an ammonia stripping tower, feeding air into an ammonia stripping tower by a fan, and feeding ammonia gas in the press filtrate into the air to form rich ammonia gas; (30) the rich ammonia gas enters an ammonia absorption tower, and ammonia water is formed after the aqueous solution absorbs the ammonia gas in the rich ammonia gas, wherein the rich ammoniagas forms poor ammonia gas, and the poor ammonia gas returns to the ammonia stripping tower and is recycled; (40) enabling the ammonia water to enter an ammonia oxidation desorption tower, and oxidizing ammonia gas in the ammonia water into nitrogen by using sodium hypochlorite, wherein the ammonia water subjected to deamination forms deamination liquid; and (50) returning the deamination liquidinto the ammonia absorption tower for recycling. In the application, ammonia gas in the press filtrate is blown off by air to form ammonia water for centralized treatment, and poor ammonia gas formingafter the ammonia gas is absorbed is recycled so that the leakage of the ammonia gas is avoided, and the treatment effect of the ammonia gas is ensured.
Description
technical field [0001] The invention relates to a process for removing ammonia and nitrogen from carbonized sludge press filtrate. Background technique [0002] In chemical sewage, there are generally high ammonia nitrogen substances, which are generally treated by microbial treatment processes, combined with chemical precipitation and catalytic oxidation processes. However, these processes generally use sewage as a carrier for treatment, requiring a large number of large-scale equipment for production, and the state of high investment and operating costs makes the sewage treatment costs of enterprises greatly consume the profits of enterprises, and some enterprises cannot even operate normally. run. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a process for removing ammonia nitrogen from carbonized sludge press filtrate, which comprises the steps: [0004] (10) heating the press filtrate, which is the filtrate p...
Claims
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Login to View More IPC IPC(8): C02F9/10C02F11/122C02F101/16
CPCC02F1/02C02F1/20C02F1/76C02F9/00C02F11/122C02F2101/16
Inventor 陈国锋仲旭胡敏娴季和玉黄惟逸丁建戴君曹俊峰
Owner JIANGSU HAIRONG THERMAL ANDENVIRONMENTAL ENG CO LTD