Shandong Longxin Pharmaceutical Co., Ltd. belongs to the basic chemical raw material manufacturing industry, and uses toxic and harmful raw materials - phenol, sulfuric acid, liquid caustic soda, methanol, etc. in the production process. According to the "Cleaner Production Auditing Measures", dual-owned enterprises that use toxic and harmful raw materials should implement mandatory cleaner production audits. According to the "Cleaner Production Promotion Law of the People's Republic of China", "Cleaner Production Auditing Measures", "Regulations on Cleaner Production Auditing Procedures for Key Enterprises" (Huanfa  No. 151), and "Guidelines for Cleaner Production Audit Evaluation and Acceptance" ( Huanban Technology  No. 5), "Shandong Province Cleaner Production Audit Implementation Rules" and Zibo Ecological Environment Bureau "Notice on Issuing the List of Companies Implementing Mandatory Cleaner Production Audit in Zibo in 2020" (Zihuan Letter  No. 76), Shandong Longxin Pharmaceutical Co., Ltd. was listed as an enterprise implementing mandatory cleaner production audits in Zibo City, requiring the implementation of cleaner production audits.
To this end, on the basis of standardizing its own management and maintaining a high resource utilization rate, our company conducts clean production audits to further improve the efficiency of resource utilization, improve the environment, and create greater economic benefits for the enterprise. This round of audit is the first round of clean production audit of our company. From May 2020 to December 2020, under the guidance of the auditors of Zibo Kangyuan Environmental Protection Technology Co., Ltd., the company successfully completed the first round of clean production audits.
In the audit preparation stage, the consulting unit instructed our company to set up a production audit team, formulate audit work plans, launch publicity and education, and conduct cleaner production training;
In the pre-audit stage, a current situation investigation was carried out, focusing on the company's general situation, production status, environmental protection status, management status, evaluation of pollution production and pollution status, comparison of pollution production and pollution status of similar enterprises at home and abroad, analysis of pollution production reasons, and evaluation conclusions. Review key points (30,000 tons/year salicylic acid plant), set clean production goals and propose and implement no-low-cost plans;
In the audit stage, the actual measurement of the key materials was carried out, the balance was established and the causes of waste were analyzed.
In the program generation and screening stage, 9 cleaner production programs were proposed, including 6 no/low-cost programs and 3 medium/high-cost programs;
In the determination stage of the plan, the high-cost plan of this round of review process - energy-saving transformation of the stirring system of the F7 salicylic acid carboxylation reactor was determined, and the implementation of this plan was determined through technical assessment, environmental assessment and economic assessment;
At the implementation stage of the plan, our company has organized the implementation of the proposed plans. As of October 31, 2020, the company's 9 clean production plans have all been implemented.
The company has implemented 9 plans with an investment of 4.117 million yuan. After the audit, the actual saving of electricity consumption is 1.7202 million kwh/a, steam saving is 3650 t/a, and the economic benefit is 5.1188 million yuan/a. The environmental benefit generated is to reduce waste water discharge. The amount is about 1749t/a.
After the audit, the company's clean production level is relatively high.
During this round of review, the company has not had any major or particularly major pollution accidents. At the same time, the company's pollutants can meet the concentration requirements, total requirements and so on. Through the clean production audit, Shandong Longxin Pharmaceutical Co., Ltd. truly embodies the principle of "energy saving, consumption reduction, pollution reduction, and efficiency enhancement" of clean production, which has injected new vitality into the development of the enterprise.