Sewage treatment is an indispensable environmental protection measure in modern urban life, and the delivery of chemicals is one of the important links in the sewage treatment process. Reasonable control of the dosage of chemicals is very important for the effective treatment of sewage and the protection of the water environment. This article will focus on the issues related to the amount of sewage chemicals.
In the process of sewage treatment, commonly used agents include flocculants, disinfectants, deodorants, etc. Each agent has a specific purpose and the corresponding amount will be different.
Coagulant:It is mainly used to remove suspended solids, suspended particles and turbid substances in sewage. Commonly used flocculants include polymerized iron salts, polymerized aluminum salts, etc. The determination of the dosage should be based on the actual situation analysis of the water quality and solid content of the sewage, which is generally 5-20 mg l.
Disinfectants:It is used to kill bacteria, viruses and other harmful microorganisms in sewage. Commonly used disinfectants are sodium chloride, sodium hypochlorite, etc. The dosage should be determined by taking into account factors such as the concentration of the disinfectant to be used, the reaction time, etc., and is generally 1-5 mg L.
Deodorant:It is used to remove the foul odor in sewage and improve the environment. Commonly used deodorants are activated carbon, oxidants, etc. The determination of the dosage should take into account the adsorption effect of the deodorant, odor concentration and other factors, generally 5-50 mg L.
When determining the amount of sewage chemicals, the following factors need to be comprehensively considered:
Effluent Quality:Different water quality effluents require different amounts of chemicals, which need to be adjusted according to specific water quality test results.
Wastewater Treatment Objectives:According to the actual needs, the amount can be adjusted to achieve a better processing effect.
Reagent Recommendations:According to the suggestions of the reagent manufacturer, determine the reasonable amount to ensure the best utilization of the agent.
In order to ensure the accuracy and stability of the amount of sewage chemicals, monitoring and control are required. The following are commonly used monitoring methods:
1.Tracer method: A concentration of tracer reagent is placed in the effluent and a sample is collected at the outlet for analysis. Through the analysis results, it is possible to determine whether the actual amount of the agent meets the requirements.
2.Automatic control system: The automatic control system can be used to monitor and adjust the dosage of chemicals in real time. The system can automatically control the amount of chemicals according to the actual situation, so that it is always kept within a reasonable range.
*Example: Example of sewage chemical dosage**.
The reasonable control of the amount of sewage chemicals is an important factor to ensure the effect of sewage treatment. Depending on the type and use of the agent, it is necessary to determine the appropriate dosage. At the same time, it is essential to monitor and adjust the dosage to ensure optimal use of the agent. Through scientific management and monitoring measures, the effectiveness and sustainability of wastewater treatment can be achieved.